Who is Steve Wozniak

I met Steve Wozniak once and spoke to him after a presentation I made when I was working for Apple. He's an interesting guy who likes to pull pranks, among other things. At yesterday's staff orientation, there was a game where people had the name of a famous UC graduate on their back and other people gave hints so they could figure out who the person was. Someone had Steve Wozniak, and I gave her all kinds of hints but she never got it. "First name is Steve, last name isn't Jobs, and he created the personal computer". "Wrote a book about himself called iWoz". "Has a big collection of Segways." Those didn't do the job. I guess she may have been a little too young to remember the Apple II.